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Asset Impairments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 27, 2021
Nov. 28, 2020
Aug. 28, 2021
Aug. 29, 2020
Aug. 31, 2019
Sep. 30, 2020
Asset Impairments [Abstract]            
Inventory write-down $ 30,091   $ 30,091  
Prepaid purchase of PPE           $ 26,726
Impairment charge   $ 26,726        
Proceeds from legal settlement agreement with a vendor     $ 20,840